This 88 steps video provides a quick and easy way to understand how Pic-a-Pix puzzles should be solved. The video presents a B&W Pic-a-Pix 15x15 puzzle being solved from beginning to end, one-step at a time.
Any chance that you can make some grids bigger in say a games magazine? to enable easier solving. these are just maddening and as a subscriber- I have many puzzle grids to try.